Fig. 1.
Reddening map for distant sources in Galactic coordinates. Scatter plot of all Gaia DR2 sources with parallaxes between 1/60 and 1/30 mas (nominal heliocentric distances between 30 and 60 kpc) in Galactic coordinates. The color-coding corresponds to the value of the reddening, E(GBP − GRP). The black rectangles enclose Region 1 (lower left) and Region 4 (upper right).
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